Periscopical sight.



H. E. HARTNEY. PERISCOPICAL SIGHT. APPLICATION FILED MAY 4,19I5.

Patented Mar. 28, 1916.

b xoanlmn co.. WASHINGTON D c HAROLD EVANS HARTNEY, 0F WINNIPEG,MANITOBA, CANADA.

PERISCOPICAL SIGHT.

Specification ofJLetters Patent.

Patented Mar. 28, 1916.

Y Y.apparatuur med Maya, 1915. serial No. 25,825.

To all whom t may concern.'

Be it known that I, HAROLD EVANS HART.- NEY, asubject of the King ofEngland, residing at lVinnipeg, Province of Manitoba, Canada, haveinvented certain new and useful Improvements in Periscopical Sights, ofwhich the following is a specication.

This invention relates to improvements in fire arm attachment and in itsmore intense aspect to devices of a periscopical nature adapted toenable one to properly aim and discharge a gun with which it isassociated Without exposing the person operating the gun.

Gne of the' objects of the present invention is to provideva device orperiscopical sighter, of the above general character, which will besimple in construction and cheap to manufacture.

A further object is to provide a `device of the above character whichwill be reliable and eii'icient in use and operation at all times.

A further object is to provide a device of the first above mentionedcharacter adapted to be attached or removed from fire arms of standardmake at will.

@ther objects will be in part obvious from the annexed drawings and inpart indicated in connection therewith by the following analysis of thisinvention.

This invention accordingly consists in the features of construction,combination of parts and in the unique'relations of the members and inthe relative proportioning and disposition thereof, all as morecompletely outlined herein.

To enable others skilled in the art so fully to comprehend theunderlying features thereof that they may embody the saine by thenumerous modifications in structure and relation contemplated by thisinvention, drawings depicting` a preferred form have been annexed as apart of this disclosure, and in such drawings like characters ofreference denote corresponding parts throughout all the views, in which-Figure l is a perspective view showing the general manner of use andoperation; Fig. 2 is a partial sectional plan view of the periscopeattachment; Fig. 3 is a rear elevational view showing the positioning ofthe device with respect to the line of Sights, and Fig. 4 is a detailview of one of the mirrors suitably marked to enable the operator tomake proper allowance for variations in wind and elevation.

Referring no w to the drawings in detail and more particularly to Fig.l, 5 denotes an ordinary service rifle of any desired type, although itis to be understood that the periscope attachment is applicable withslight modifications to various other forms of fire arms. This rifle 5is provided with the usual front sight 6 and notched rear sight 7 on theupper part of the barrel and immediately behind which is detachablysecured a periscope attachment 8 projecting laterally at right angles tothe line of sight and lying in the same horizontal plane therewith. Thisperiscope comprises a rectangular tubular member as shown more clearlyin Fig. 4, about an inch and a half wide and three quarters of an inchin depth, and a total length of approximately nine inches, although itis, of course to be understood that these dimensions may be varied atwill. At one end of this tube 8 is a mirror l0 positioned at an angle of45C ,with respect to the line of sight and parallel to a second mirrorll at the opposite end. Small open* ings l2 and 13 are positionedopposite or adjacent these mirrors whereby the objective mirror 10 willreflect the line of sights as shown clearly in Fig. 3 to the observationmirror l1 clearly in view of the soldier or operator concealed behind anembankment or protection 14, as shown in Fig. l. One of these mirrors,preferably the field mirror 10, is graduated in the manner shown in Fig.4 to enable the marksman to compensate for errors due to windage and theeffect of gravity on the bullet when shooting at long range. The wholeapparatus is preferably painted black inside and out so as not to benoticeable at a distance.

The device may be secured to the gun in any desired manner' permittingfree working of the parts of the gun, and is preferably provided with adownwardly projecting bracket and base 15 adapted to be secured directlyto the stock of the rifie. The base may have a square hole running atright angles to thelength of the tube with its lower side parallel withthe base of the tube whereby the periscope will be in the same plane asthe gunsight when a similarly shaped member on the tube is slippedtherein.

It is believed that the method of operation and use of a device of thischaracter are clear from the above description. It may be stated,however, that by means of and instead of shooting over `an elevationVwhich necessitates a suitable support or contrivance for artificiallyholding the rifle the rifle can be ired directly from the forearm inpractically the usual manner.l The field mirror lying directly in theline of sight reflects the vision at right angles to the observationmirror at the opposite end of the periscope which isY opposite the eyeof the soldier, the field mirror being graduated by cross hair lines, asshown in Fig. 4, running both vertically and horizontally enables theparty firing to aim ofi' the same amount due to wind or elevation as maybe necessaryor advisable.

It is thus seen that the present invention provides a simple andpractical device which will be cheap to manufacture and install andadapted to accomplish among others all of the objects and advantagesabove set forth.

Vithout further analysis, the foregoing will so fully reveal the gist ofthis invention that others can by applyingcurrent knowledge readilyadapt it for various applica# tions without omitting certain featuresthat, from the standpoint Aof the prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this invention,and therefore such adaptations should and are intended to becomprehended within the meaningV and range of equivalency of thefollowing claim.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is 4:

In an attachment for fire arms, in combination, a tubular member havingdiagonally opposite openings, parallel mirrors within said tubularmember adjacent said openings adapted to transmit a vision entering'through oneV of said openings out through the other opening, one ofsaid mirrors being graduated both vertically and horizontally, and meansfor supporting said tubular member provided with fastening means'forsecuring said member to the stock of a gun.

In testimony whereof I afix Vmy Vsignature in presence of `twowitnesses.

Y y HAROLD EVANS HARTNEY.

Witnesses:

MownAY M.Y PERDUE, RoYsToN THOMAS ROBINSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

' i vWashington', D. C.

